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DE3129019C2 - - Google Patents

Info

Publication number
DE3129019C2
DE3129019C2 DE3129019A DE3129019A DE3129019C2 DE 3129019 C2 DE3129019 C2 DE 3129019C2 DE 3129019 A DE3129019 A DE 3129019A DE 3129019 A DE3129019 A DE 3129019A DE 3129019 C2 DE3129019 C2 DE 3129019C2
Authority
DE
Germany
Prior art keywords
acrylic acid
stage
acrylate
copolymer
flocculant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE3129019A
Other languages
German (de)
English (en)
Other versions
DE3129019A1 (de
Inventor
Neville J. Wanneroo Au Brownrigg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of DE3129019A1 publication Critical patent/DE3129019A1/de
Application granted granted Critical
Publication of DE3129019C2 publication Critical patent/DE3129019C2/de
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud
    • C01F7/0653—Separation of the insoluble residue, e.g. of red mud characterised by the flocculant added to the slurry
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Inorganic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
DE19813129019 1980-07-23 1981-07-22 Verfahren zur aluminiumoxid-gewinnung Granted DE3129019A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17161680A 1980-07-23 1980-07-23

Publications (2)

Publication Number Publication Date
DE3129019A1 DE3129019A1 (de) 1982-03-18
DE3129019C2 true DE3129019C2 (it) 1993-08-26

Family

ID=22624471

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813129019 Granted DE3129019A1 (de) 1980-07-23 1981-07-22 Verfahren zur aluminiumoxid-gewinnung

Country Status (13)

Country Link
JP (1) JPS5751117A (it)
AU (1) AU7319781A (it)
BR (1) BR8104729A (it)
CA (1) CA1176031A (it)
DE (1) DE3129019A1 (it)
ES (1) ES8204397A1 (it)
FR (1) FR2487325A1 (it)
GB (1) GB2080272B (it)
GR (1) GR81418B (it)
HU (1) HU186395B (it)
IE (1) IE51418B1 (it)
IT (1) IT1195978B (it)
YU (1) YU43029B (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU536264B2 (en) * 1980-07-23 1984-05-03 Cytec Technology Corp. Process for alumina recovery
US4545902A (en) * 1984-09-17 1985-10-08 Nalco Chemical Company Flocculants for bauxite (red mud)
US4767540A (en) 1987-02-11 1988-08-30 American Cyanamid Company Polymers containing hydroxamic acid groups for reduction of suspended solids in bayer process streams
JPH03122694U (it) * 1990-03-20 1991-12-13
FR2708587B1 (fr) * 1993-07-29 1995-09-01 Snf Sa Procédé pour fluidifier les suspensions aqueuses de boues rouges dans la fabrication de l'alumine par la technique Bayer .
US5951955A (en) * 1995-11-07 1999-09-14 Cytec Technology Corp. Concentration of solids in the Bayer process
US5853677A (en) * 1996-04-26 1998-12-29 Cytec Technology Corp. Concentration of solids by flocculating in the Bayer process
US6086771A (en) * 1997-12-12 2000-07-11 Nalco Chemical Company Water continuous emulsion polymers for improving scale control in the bayer process
US6048463A (en) * 1997-12-12 2000-04-11 Nalco Chemical Company Water continuous methyl acrylate emulsion polymer combinations and methyl acrylate emulsion homopolymers for improved flocculation of red mud in the bayer process
US6036869A (en) * 1997-12-12 2000-03-14 Nalco Chemical Company Water continuous methyl acrylate emulsion polymers for improved flocculation of red mud in the Bayer process
GB0029077D0 (en) * 2000-11-29 2001-01-10 Ciba Spec Chem Water Treat Ltd Flocculation of mineral suspensions
GB0103192D0 (en) * 2001-02-09 2001-03-28 Ciba Spec Chem Water Treat Ltd Scale removal or prevention
CN103547532B (zh) * 2012-04-26 2016-01-20 昭和电工株式会社 含有针铁矿的赤泥的洗涤方法
CA3117346A1 (en) 2018-10-31 2020-05-07 Basf Se Enhanced dewatering of mining tailings employing chemical pre-treatment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3390959A (en) * 1965-04-30 1968-07-02 Nalco Chemical Co Process of making alumina
US3445187A (en) * 1966-05-25 1969-05-20 Nalco Chemical Co Process for separation of red mud from dissolved alumina
JPS4837678B1 (it) * 1969-04-17 1973-11-13
NL6906483A (it) * 1969-04-30 1970-10-27
JPS4929080B1 (it) * 1970-08-24 1974-08-01
GB1378981A (en) * 1972-01-13 1975-01-02 Nalco Chemical Co Process for the separation of red mud from alumina solutions
GB1439057A (en) * 1973-10-10 1976-06-09 Allied Colloids Ltd Flocculating agents for alkaline systems
US4083925A (en) * 1976-03-22 1978-04-11 Martin Marietta Aluminum, Inc. Method for removing ferrous iron from alkali metal aluminate liquor

Also Published As

Publication number Publication date
IE51418B1 (en) 1986-12-24
BR8104729A (pt) 1982-04-13
CA1176031A (en) 1984-10-16
ES504178A0 (es) 1982-05-16
JPS5751117A (en) 1982-03-25
DE3129019A1 (de) 1982-03-18
HU186395B (en) 1985-07-29
IT1195978B (it) 1988-11-03
GB2080272A (en) 1982-02-03
IT8148957A0 (it) 1981-07-22
JPH024532B2 (it) 1990-01-29
GR81418B (it) 1984-12-11
FR2487325B1 (it) 1985-04-26
ES8204397A1 (es) 1982-07-16
AU7319781A (en) 1982-01-28
YU181281A (en) 1983-10-31
FR2487325A1 (fr) 1982-01-29
YU43029B (en) 1989-02-28
IE811647L (en) 1982-01-23
GB2080272B (en) 1984-06-13

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee